Our Chrome Purifying system is a unique electrolytic separation technique based on electro-dialysis using diaphragm for the removal of metallic impurities (such as iron, copper, nickel, aluminum and zinc) and re-oxidize trivalent chrome from all types of chrome plating solutions including hard chrome, decorative chrome plating baths . The main advantage of this chrome purifier is that it can be operated continuously with the plating process thereby allowing continuous removal of metallic impurities and reoxidation of Cr (III).Apart from reoxidation of the trivalant chrome it also reduces trivalant chrome by capturing it inside the vessel very speedily,Therefore, no need to dump the Chrome solution for reducing the impurities as they will be continuously removed.

PROBLEMS FACED BY THE PLATER WHEN THE LEVEL OF METALLIC IMPURITIES GETS TOO HIGH:

Burning and Roughness.

Reduction in cathode efficiency.

Deposit Dull.

Pitted Deposit

Trees and Nodular

Blistering and Peeling

Deposit Stressed & Brittle

Reduction in plating rate.

Reduction of Bright Range.

Poor coverage ( Throw) & Skip Plating

More variation in deposit. (Dog bone effect)

Softer Deposits

Reduced Wear Resistance

Poor Corrosion Resistance

Increase of elect consumption as high voltage is required to give the desired Amps. ( Limiting the available Current)

P.M Recovery system has solution for all the above problems the Chrome Purifier systems designed by us are having the following advantages.

TECHNOLOGY:

Metallic impurities such as Fe2+, Cu2+, Zn2+, Al+3, Ni2+ migrates through the diaphragm to the cathode compartment. Cations are reduced at the cathode and hydrogen evolution occurs, raising the pH of the catholyte. As the concentration of hydroxyl ion (OH) increases inside the diaphragm resulting the metal hydroxides to precipitate in the cathode chamber, and outside the diaphragm the Cr+3 is continuously reoxidized to Cr+6 thus simultaneously and speedy reduction of metallic impurities and Cr+3 by capturing them inside the vessel.